Revert "sstatesig: Allow to cross target-native/cross/nativesdk boundary"

:Release Notes:
Revert https://g2g.palm.com/4267 to solve several side effects
of the original fix.

:Detailed Notes:
This reverts commit 9ac3a7c803e7793b3274e4998f167b6278db8042.
Three issues caused by original fix:
* Upstream commit which excludes signatures of runtime 
  dependencies for packagegroups can cause do_rootfs 
  errors when some component is renamed and packagegroup 
  still depends on old name. 
* Since we're including native signatures in target recipe
  signatures, we end with different signatures for 32bit
  and 64bit builders. 
* Certain packages that depend on native tools that depend
  on WEBOS_DISTRO_BUILD_ID are now being recompiled
  unnecessarily.

Revert this until we have better solutions.

:Testing Performed:
Only build tested.

:QA Notes:

:Build Notes:
Invalidates almost all sstate signatures.

:Issues Addressed:
[GF-51950] Build doesn't recognize bbappend-ed
           cmake-modules-webos-native as having changed
[ES-439]   Shared state for certain packages cannot be
           re-used when WEBOS_DISTRO_BUILD_ID differs

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Change-Id: I05d3fd62a9bdb3a04231b1cb81ce4a3eec561df0
Reviewed-on: https://g2g.palm.com/4595
Reviewed-by: DCO Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>